Pairwise benchmark snapshot · Aug 16, 2026

Claude Haiku 4.5 vs Claude Opus 4.5 benchmark

Name: Claude Haiku 4.5 vs Claude Opus 4.5 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Haiku 4.5 (Anthropic) and Claude Opus 4.5 (Anthropic) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Opus 4.5 is ahead by 130 points (1,568 vs 1,438; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Claude Opus 4.5 resolves 76.8% versus 58.2% (seed-bootstrap (Aug 1, 2026)). Claude Haiku 4.5 streams faster (175 tok/s) while Claude Haiku 4.5 is the cheaper output token ($5/1M). Claude Haiku 4.5 has the larger context window (200k tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Anthropic

Claude Haiku 4.5

Anthropic cheap/fast Claude SKU. Official Claude Platform list price $1/$5 per 1M tokens (Anthropic Haiku page).

Elo 1,438$5/1M out

Anthropic

Claude Opus 4.5

Anthropic frontier coding and computer-use model. SWE-bench leader on the official mini-SWE-agent harness in the Feb 2026 refresh.

Elo 1,568$25/1M out

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Quick vs:vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet vs GPT-5

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Haiku 4.5 (4)vsClaude Opus 4.5 (5)

Claude Haiku 4.5: 4W (44%)Overall: Claude Opus 4.5Claude Opus 4.5: 5W (56%)

← Claude Haiku 4.51 tiesClaude Opus 4.5 →

Claude Opus 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,438vs1,568

Coding Elo

1,446vs1,574

SWE-bench

58.2%vs76.8%

LiveBench

62.4%vs71.2%

GPQA Diamond

74%vs84.1%

Claude Haiku 4.5: 0WClaude Opus 4.5: 5W

Claude Haiku 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

175 tok/svs62 tok/s

Time to first token

95 msvs380 ms

Claude Haiku 4.5: 2WClaude Opus 4.5: 0W

Claude Haiku 4.5 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$5/1Mvs$25/1M

Input price

$1/1Mvs$5/1M

Context window

200kvs200k

Claude Haiku 4.5: 2WClaude Opus 4.5: 0W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageClaude Opus 4.5 3/6

Preference Elo

Claude Opus 4.5

130 pts advantage

Throughput Speed

Claude Haiku 4.5

113 tok/s faster

Price Efficiency

Claude Haiku 4.5

$20.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,438

EloHigh is better

1,568+9%

Code Elo

High is better

1,446

Code EloHigh is better

1,574+9%

LiveBench

High is better

62.4%

LiveBenchHigh is better

71.2%+14%

SWE-bench

High is better

58.2%

SWE-benchHigh is better

76.8%+32%

GPQA

High is better

74%

GPQAHigh is better

84.1%+14%

TTFT

Low is better

+300%95 ms

TTFTLow is better

380 ms

Speed

High is better

+182%175 tok/s

SpeedHigh is better

62 tok/s

In $

Low is better

+400%$1/1M

In $Low is better

$5/1M

Out $

Low is better

+400%$5/1M

Out $Low is better

$25/1M

Context

High is better

200k

ContextHigh is better

200k

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 80% with Claude Haiku 4.5

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Claude Haiku 4.5$110.00 / mo

In: $35.00Out: $75.00

Claude Opus 4.5$550.00 / mo

In: $175.00Out: $375.00

Estimated Cost Delta

Claude Haiku 4.5 is estimated to save $440.00/month ($5,280/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Claude Opus 4.5:Pick Claude Opus 4.5 when repo-level coding accuracy is the constraint.
2
Claude Haiku 4.5:Pick Claude Haiku 4.5 when you are optimizing output cost.
3
Claude Haiku 4.5:Pick Claude Haiku 4.5 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Opus 4.5

Higher SWE-bench (76.8%).

High-volume chatClaude Haiku 4.5

Lower output list price ($5/1M).

Voice / low-latency UIClaude Haiku 4.5

Lower TTFT (95 ms).

Long-document RAGClaude Haiku 4.5

Larger window (200k).

Screenshots / visionClaude Opus 4.5

Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Opus 4.5	Higher SWE-bench (76.8%).
High-volume chat	Claude Haiku 4.5	Lower output list price ($5/1M).
Voice / low-latency UI	Claude Haiku 4.5	Lower TTFT (95 ms).
Long-document RAG	Claude Haiku 4.5	Larger window (200k).
Screenshots / vision	Claude Opus 4.5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 16, 2026

Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

$1/$5 hosted Claude vs a cheap long-context open sibling. The alternative-to-Sonnet pair that is honest.

launchApr 8, 2026

Llama 4 Scout: long-context open sibling of Maverick

Huge window, cheap hosted lists. The Haiku alternative that is actually open-weight.

launchFeb 20, 2026

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

The Feb refresh made 4.5 a coding reference. Newer Opus SKUs exist; this row stays as the dated harness point.

launchOct 22, 2025

Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Official Anthropic list $1/$5. This is the SKU behind “cheapest Claude alternative” that is still Claude.

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LIVE

Anthropic

Claude Haiku 4.5

Elo 1,438

LiveBench62.4%

SWE-bench58.2%

Speed175 tok/s

Output cost$5/1M

Anthropic

Claude Opus 4.5

Elo 1,568

LiveBench71.2%

SWE-bench76.8%

Speed62 tok/s

Output cost$25/1M

Frequently Asked Questions

Which is better overall, Claude Haiku 4.5 or Claude Opus 4.5?: Claude Opus 4.5 has the higher preference Elo in our latest snapshot (1,568). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude Haiku 4.5 or Claude Opus 4.5?: Claude Opus 4.5 leads SWE-bench at 76.8% vs 58.2%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Claude Haiku 4.5 output tokens are $5/1M versus $25/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Haiku 4.5 or Claude Opus 4.5?: Claude Haiku 4.5 has the lower time-to-first-token (95 ms vs 380 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Claude Haiku 4.5 accepts 200k tokens versus 200k.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Haiku 4.5 and Claude Opus 4.5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Haiku 4.5 matchups →|All Claude Opus 4.5 matchups →

Claude Haiku 4.5 vs Claude 3.5 Haiku (previous haiku)Claude Opus 4.5 vs Claude Opus 4 (previous opus)Claude Opus 4.5 vs Claude Opus 4.6 (next opus)Claude Sonnet 4.5 vs Claude Opus 4.5 Claude Sonnet 5 vs Claude Opus 4.5 Claude Opus 5 vs Claude Opus 4.5

Claude Haiku 4.5 vs Claude Opus 4.5 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Haiku 4.5 (4)vsClaude Opus 4.5 (5)

Claude Haiku 4.5: 4W (44%)Overall: Claude Opus 4.5Claude Opus 4.5: 5W (56%)

← Claude Haiku 4.51 tiesClaude Opus 4.5 →

Claude Opus 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,438vs1,568

Coding Elo

1,446vs1,574

SWE-bench

58.2%vs76.8%

LiveBench

62.4%vs71.2%

GPQA Diamond

74%vs84.1%

Claude Haiku 4.5: 0WClaude Opus 4.5: 5W

Claude Haiku 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

175 tok/svs62 tok/s

Time to first token

95 msvs380 ms

Claude Haiku 4.5: 2WClaude Opus 4.5: 0W

Claude Haiku 4.5 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$5/1Mvs$25/1M

Input price

$1/1Mvs$5/1M

Context window

200kvs200k

Claude Haiku 4.5: 2WClaude Opus 4.5: 0W

Recommended Workload Routing

Repo / coding agentsClaude Opus 4.5

Higher SWE-bench (76.8%).

High-volume chatClaude Haiku 4.5

Lower output list price ($5/1M).

Voice / low-latency UIClaude Haiku 4.5

Lower TTFT (95 ms).

Long-document RAGClaude Haiku 4.5

Larger window (200k).

Screenshots / visionClaude Opus 4.5

Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Opus 4.5	Higher SWE-bench (76.8%).
High-volume chat	Claude Haiku 4.5	Lower output list price ($5/1M).
Voice / low-latency UI	Claude Haiku 4.5	Lower TTFT (95 ms).
Long-document RAG	Claude Haiku 4.5	Larger window (200k).
Screenshots / vision	Claude Opus 4.5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Frequently Asked Questions

Which is better overall, Claude Haiku 4.5 or Claude Opus 4.5?

Claude Opus 4.5 has the higher preference Elo in our latest snapshot (1,568). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Claude Haiku 4.5 or Claude Opus 4.5?

Claude Opus 4.5 leads SWE-bench at 76.8% vs 58.2%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Claude Haiku 4.5 output tokens are $5/1M versus $25/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Haiku 4.5 or Claude Opus 4.5?

Claude Haiku 4.5 has the lower time-to-first-token (95 ms vs 380 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Claude Haiku 4.5 accepts 200k tokens versus 200k.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Haiku 4.5 and Claude Opus 4.5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Opus 4.5

Claude Haiku 4.5

Claude Haiku 4.5

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

Llama 4 Scout: long-context open sibling of Maverick

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Claude Haiku 4.5

Claude Opus 4.5

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Opus 4.5

Claude Haiku 4.5

Claude Haiku 4.5

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

Llama 4 Scout: long-context open sibling of Maverick

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Haiku 4.5

Claude Opus 4.5

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons